First a sanity check: in the RoboHelp editor, do the images correctly show up? Or do you see red bordered squares?
If you generate your output, are the image files copied over to the output at all?
Thanks for responding. The images show up perfectly fine in the editor, but when I generate the output a blank square the size of the image is shown. I am attaching a screenshot showing you what I mean. If I delete and then reinsert a completely different image that has previously shown up in my output, I can see that image perfectly fine. This makes me believe that the localized images are corrupted. Most of the localized images were taken by an automated script. The original English screenshots (which all appear normally in the output) were all captured by hand (Print Screen and copy paste into Paint originally). Many of the localized screenshots do work, but maybe something went wrong during the capture of the ones in question. Unfortunately, I do not have another set of images to work with at the moment so until I can obtain a fresh set of screenshots, I think I may be stuck.